5.3 Sedimentary Rocks

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Vocabulary

Sediment: Small pieces of solid material which originate from rocks or living things
Erosion: anything which loosen fragments of rock or soil
Deposition: The process of which material carried by wind or water settles down
Compaction: The process which compresses sediment together
Cementation: The process when minerals which have dissolved crystalize and glue sediment together
Clastic Rock: It is a sedimentary rock that forms when the fragments in it are squeezed together
Organic Rock: A rock that forms where the remains of plants and animals are deposited in very thick layers.

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Outline

Introduction

• If you have been to Arches National Park in Utah, you might have seen the strangest scenery in the world
  • The park contains dozens of natural anticlines as well as some synclines which are sculpted naturally from erosion
    • They have layers of various colors such as red, orange, pink, and tan
    • All of the anticlines and synclines in the park are made of sandstone.
  • One of the famous arch in Arches National the Landscape Arch
    • It is almost 90 meters wide and 30 meters tall

From Sediment to Rock

• Sedimentary rocks are formed from particles deposited by water and wind
  • The deposited sediment is the thing which forms the sedimentary rock
    • Sediment are small pieces of solid material which originate from rocks or living things
    • Water, wind, and ice can deposit layers of sediment in an area
• Erosion
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